The Various Systems of Legislation
If we ask in what precisely consists the greatest good of all, which should be the end of every system of legislation, we shall find it reduce itself to two main objects, liberty and equality—liberty, because all particular dependence means so much force taken from the body of the State, and equality, because liberty cannot exist without it.
I have already defined civil liberty; by equality, we should understand, not that the degrees of power and riches are to be absolutely identical for everybody; but that power shall never be great enough for violence, and shall always be exercised by virtue of rank and law; and that, in respect of riches, no citizen shall ever be wealthy enough to buy another, and none poor enough to be forced to sell himself: 17 which implies, on the part of the great, moderation in goods and position, and, on the side of the common sort, moderation in avarice and covetousness.